Citation Impact

Citation Impact

The citation impact of a set of documents is calculated by dividing the total number of citations by the total number of publications. Citation impact shows the average number of citations that a document has received.

Citation Impact has been extensively used as a bibliometric indicator in research performance evaluation and can be applied at all organizational levels (author, institution, country/region, research field or journal). However, there are limitations to the indicator. For example, it ignores the total volume of research outputs.

Example Citation Impact at the Author Level

TOTAL PUBLICATIONS

TOTAL CITATIONS

CITATION IMPACE

Researcher A

1

50

50

Researcher B

10

200

20

This table shows an example of the Citation Impact for two Researchers. Researcher A has only one publication that has received 50 citations while Researcher B has published 10 documents that have received 200 citations. Researcher A has a higher Citation Impact (50) than Researcher B (20), even though Researcher B has published more documents and received more citations overall.

At the field level, the Citation Impact of certain disciplines is often higher than in other scientific fields due to several factors, such as the degree to which references from other fields are cited